Identify Connector : IDC with double bumps?

[NivagSwerdna]

I would like to get a longer interlink cable and was about to order a 100cm IDC cable with 50 pin IDC connectors... and then I noticed that the bumps are different?

Is this not IDC?

Thanks in advance

[ajb]

"IDC" just means "Insulation Displacement Connector", so any connector that punches through the insulation on the wire to make contact with the conductor is IDC. 

There are a few variations in the connector keying style, some are more or less standard some of them may be special order or only made by a few manufacturers.  Your best bet may be to look through a few catalogs for 100mil IDC ribbon connectors and see if you can find one that matches.  Take a good look at the mating headers, since those are what you need to match.  You may even find that the header has snap-in keying gizmos that can be removed to accommodate different connectors if you can't find a direct match.

[mikeselectricstuff]

May be easier to find one with no bumps ( or cut the centre bump off) , and just make sure it's in the right way.

[Siwastaja]

Yeah, for one-off just cut the bump out of a standard connector and make sure you connect it the right way.

[jmelson]

I think the double bumps is considered "military keying".  There are some shrouded headers that have 3 notches so they can accommodate both styles.  There is also a style that has two narrow grooves in the female connector, and the headers have slots where keying ridges can be inserted.
Jon

[newbrain]

Available from, e.g., Mouser (I had the tab open, no affiliation), also in quantity 1, XG4M-5031-T.

[NivagSwerdna]

Thanks all